12 wall finishes decoded
Jan 04, 2017 Interiors
Anchor: Priya Arya
Photograph: Shutterstock
Photograph: Shutterstock
Physically, walls consitute a large part of a space. And visually, too, they impact an ambience of a room for precisely the same rason. Painting is one of the most popular surface treatments for exterior and interior walls. Architect Manmohan Khanna decodes some of the jargon connected to paint and applications of different types of wall treatments.
- Lime coating: This can be used on interior and exterior walls. This is quite often applied directly to the masonry or brickwork and more commonly to pre-applied lime coatings with minimum of three coats (ie harling, plaster, render, etc).
- Colour wash: This type of paint is applied to interior and exterior walls. The procedure to apply the paint is similar to lime coating with three coats of colour.
- Dry distemper: Strictly for interior walls; you can apply it on plaster, walls and ceilings.
- Oil bound distemper: For interior walls again, this is applied on a base of putty. Once it has been applied, three coats of oil bound distemper (OBD) need to be applied.
- Acrylic emulsion/plastic emulsion (water-based): This is used on the interior walls. As far as application is concerned, a base of putty then primer (oil-based cement primer) is applied. After this, use approximately two or three coats of paint. This is three times more expensive than OBD.
- Enamel paint (oil-based): The application of enamel paint is done in a very systematic way. On the raw surface of wood, first wood primer or putty is applied. Once the surface is dry, use sandpaper. Finally, on the surface three coats of enamel paint is applied. On the MS (mild steel) surface, a steel primer is applied first followed by 3 coats of enamel paint.
- Oil-based acrylic paint: A popular brand that belongs to this category is Duco, and indeed the category is now referred to by the brand name itself. This paint is used on metal or wood by first applying NC (nitrocellulose) putty on the surface as this paint won't stay on any other base. It is popularly used on furniture to provide a different feel. Like enamel paint, Duco paint is also used on interior or wooden works.
- Red oxide: This is used on metal and interior and exterior walls. Red oxide primer is applied with a brush, roller or spray. Two thin coats provide good protection for the metal being painted. Each coat needs two to six hours to dry completely and a topcoat can be applied after 24 hours.
- Metallic paint: This is strictly to be applied on the interior walls and metal only.
- Exterior paint (water-based): Apply two or three coats of putty, use sandpaper for finishing and then apply three coats of paint for better finishing.
- Cement-based paint: It is a waterproof cement-based paint and is applied directly on the plaster after the finish surface. Finally apply two or three coats of paint.
- Texture paint (cement-based): Used on interior and exterior walls, the application involves the use of roller on the surface. This gives a texture to the walls or surface.
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ManMohan Khanna
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